by Kastro
Paper/Archive/CVE-2026-48582

CVE-2026-48582

Microsoft Microsoft Exchange Online — Microsoft Exchange Online Elevation of Privilege Vulnerability

EPSS 0.7%CVSS 9.6
critical.is priorityof 100
39
CVSS 9.6 (CNA)9.6 / 10 × 3028.8Not in CISA KEV+300.0EPSS percentile 52.8.528 × 2010.6No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Missing authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.

Affected

ProductAffectedFixed inSource
Microsoft Exchange Online-–CNA

Scores by source

microsoft (CNA)9.6CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

patchmsrc.microsoft.com/update-guide/vulnerability/CVE-2026-48582